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EMBRYOLOGY EXAM II
FORM A
MARCH 3, 2003
1.
The third pharyngeal arch cartilages give rise to which of the following?
A.
stylohyoid ligament
B.
thyroid cartilage
C.
styloid process
D.
sphenomandibular ligament
E.
greater horns of the hyoid bone
2.
Which of the following structures is not related to the first pharyngeal arch?
A.
malleus
B.
facial nerve
C.
Meckel’s cartilage
D.
mandibular prominence
E.
maxillary prominence
3.
Which of the following structures is not derived from the second pharyngeal arch cartilage?
A.
incus
B.
stapes
C.
styloid process
D.
lesser horn of the hyoid bone
E.
superior part of the hyoid bone
4.
The nasolacrimal duct develops in a groove between the maxillary and lateral nasal
prominences.
A.
true
B.
false
5.
The cartilages of the larynx are derived mainly from the cartilages of which of the following
pharyngeal arches?
A.
second and third
B.
third and fourth
C.
third, fourth, and fifth
D.
fourth and sixth
E.
fourth and fifth
6.
Which of the following cranial nerves supplies muscles derived from the first pair of
pharyngeal arches?
A.
vagus
B.
glossopharyngeal
C.
facial
D.
trigeminal
E.
optic
embryology exam II, form A, page 1, questions 1-6
7.
Which of the following structures is derived from the fourth pair of pharyngeal pouches?
A.
thymus
B.
superior parathyroid glands
C.
inferior parathyroid glands
D.
thyroid gland
8.
Unilateral cleft lip results from failure of the medial nasal prominences to fuse with each
other.
A.
true
B.
false
9.
The major portion of the palate develops from the:
A.
lateral palatine processes
B.
median palatine process
C.
intermaxillary segment
D.
medial nasal prominences
E.
frontonasal prominence
10.
In DeGeorge syndrome, the development of the thymus and parathyroid glands are affected.
Which of the following is involved?
A.
first pharyngeal pouch
B.
second pharyngeal pouch
C.
third pharyngeal pouch
D.
second and fourth pharyngeal pouches
11.
When the palatine processes fail to meet and fuse with each other and with the nasal septum,
the resulting anomaly is a cleft of the:
A.
primary palate
B.
secondary palate
C.
intermaxillary segment
D.
A and B
E.
A, B, and C
12.
The intermaxillary segment of the upper jaw is formed when the maxillary prominences fuse
with one another.
A.
true
B.
false
13.
The external acoustic meatus develops from the:
A.
first pharyngeal groove
B.
second pharyngeal groove
C.
first pharyngeal pouch
D.
second pharyngeal pouch
E.
first pharyngeal groove and pouch
14.
Primary cleft palate is due to the absence of lateral palatine shelves.
A.
true
B.
false
embryology exam II, form A, page 2, questions 7-14
15.
Which of the following structures is derived from surface ectoderm?
A.
choroid
B.
bony labyrinth
C.
extrinsic eye muscles
D.
membranous labyrinth
E.
sclera
16.
Structures derived from surface ectoderm include:
A.
lens
B.
otic vesicle
C.
external acoustic meatus
D.
A and B
E.
A, B, and C
17.
The choroid is derived from the mesenchyme between the sclera and pigmented layer of the
retina.
A.
true
B.
false
18.
The otic vesicle gives rise to the:
A.
saccule
B.
utricle
C.
both
D.
neither
19.
Coloboma iridis is caused by:
A.
disturbance in the development of the lower eyelid
B.
defective closure of the choroids fissure
C.
both
D.
neither
20.
The cochlear duct:
A.
contains the organ of Corti
B.
is derived from surface ectoderm
C.
both
D.
neither
21.
The auricle of the external ear is innervated by cranial nerves:
A.
V
B.
VII
C.
both
D.
neither
embryology exam II, form A, page 3, questions 15-21
22.
The optic cup:
A.
develops from the optic vesicle
B.
gives rise to the pigment layer of the retina
C.
gives rise to the neural layer of the retina
D.
A and B
E.
A, B, and C
23.
Taste sensation from the oral part of the tongue is carried by a branch of cranial nerve:
A.
V
B.
VII
C.
IX
D.
X
MATCH THE FOLLOWING. ONE ANSWER PER QUESTION. ANSWERS MAY BE USED
MORE THAN ONCE.
24.
incus
A.
B.
C.
D.
E.
AB.
arch I
arch II
arch III
arch IV
arch VI
none of the above
25.
muscles of facial expression
26.
recurrent laryngeal nerve
27.
glossopharyngeal nerve
28.
inferior parathyroid gland
29.
mandible
30.
constrictor muscles of the pharynx
31.
thyroid gland
32.
greater horn of the hyoid
33.
lower lip
34.
Structures of the nose are derived from:
A.
pharyngeal arch I
B.
pharyngeal arch II
C.
both
D.
neither
35.
The frontonasal prominence gives rise to the:
A.
intermaxillary segment
B.
maxillary prominence
C.
both
D.
neither
embryology exam II, form A, page 4, questions 22-35
36.
The lips are derived from the:
A.
frontonasal prominence
B.
arch I
C.
both
D.
neither
37.
The intermaxillary segment forms by fusion of the:
A.
medial nasal prominences
B.
lateral nasal prominences
C.
maxillary prominences
D.
A and B
E.
A, B, and C
38.
The fifth pharyngeal arch does not contribute any cellular components to the adult body.
A.
true
B.
false
MATCH THE FOLLOWING. ONE ANSWER PER QUESTION. ANSWERS MAY BE USED
MORE THAN ONCE.
39.
palatine tonsil
A.
B.
C.
D.
E.
AB.
pouch 1
pouch 2
pouch 3
pouch 4
pouch 5
none of the above
40.
tubotympanic recess
41.
thyroid follicles
42.
superior parathyroid glands
43.
Pierre Robin syndrome
44.
eustacian tube
45.
thymus
46.
Rubella infection during the second month of development can result to damage to the:
A.
eye
B.
ear
C.
both
D.
neither
47.
Treacher Collins syndrome is associated with abnormal development of:
A.
pouch 3
B.
arch 3
C.
both
D.
neither
embryology exam II, form A, page 5, questions 36-47
48.
Disruption of the formation of arch I can result in deformity of the external ear.
A.
true
B.
false
49.
The stomodeum forms at the site of the buccopharyngeal membrane.
A.
true
B.
false
50.
During the closure of the school due to weather you:
A.
studied
B.
watched television
C.
both
D.
neither
END OF EXAM
embryology exam II, form A, page 6, questions 48-50